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Old 08-04-2016, 05:55 PM   #1
Join Date: Aug 2010
Location: MN
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I've got excessive corrosion on underside of motorhome. Not driven in winters or in salt. Believe source is from storing/parking on grass, ground. Question is how high off ground should I raise the motorhome to reduce amount of moisture from ground reaching the undercarriage? I believe that would help but not sure.

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Old 08-04-2016, 06:09 PM   #2
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Location: Lac Du Bonnet, Manitoba
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Just wondering if you camp in areas where there is high amounts of salt in the air like
along the Texas Gulf coast. I have friends who said even their bicycles started to show rust while camping in that area after 30 days.
I have used Rust Check : http://www.rustcheck.com/ here at home on my cars/trucks but have not needed it on the RV. for winter road salt. It will stop rust from spreading and seeps into areas you can otherwise have access to.

Ellen & Greg
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Old 08-04-2016, 06:12 PM   #3
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You need some what of a barrier between the ground and your unit. Plastic would be a start. After a good clean up, use a rust preventive paint to keep the rust in check.
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Old 08-04-2016, 07:24 PM   #4
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I have used lots of Rust Reformer by Rustoleum. Converts rust to a paintable surface. In spray cans at local stores.
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Old 08-07-2016, 07:44 PM   #5
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I've decided to built some ramps to store it up on to get more ground clearance. Going to use 2x4's on edge and then some Rustoleum.
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